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排序方式: 共有355条查询结果,搜索用时 15 毫秒
91.
Gianni Zoccatelli Michela Sega Michela Bolla Daniela Cecconi Patrizia Vaccino Corrado Rizzi Roberto Chignola Andrea Brandolini 《Food chemistry》2012
The aim of the work was to characterize the expression of various α-amylase inhibitors (αAIs), well known anti-nutritional compounds, for the development of healthier diploid wheat-based functional foods. 相似文献
92.
93.
Gianni Ciofani Antonio Migliore Daniele Mazzei Maria Chiara Carrozza Paolo Dario 《Microgravity science and technology》2010,22(2):123-128
The Fitts’ law describes a correlation between the time needed to complete basic tasks such as pointing movements and the
level of knowledge of the specific target to be reached. While it has been largely proved in normal gravity, very few experiments
have been carried out in altered gravitational conditions. In our experiment, four subjects were positioned in front of a
panel where round targets were placed along a circumference. They carried out pointing movements towards the targets when
these were switched on. The task time was acquired and processed off-line. In all the cases, the performance of each subject
have been significantly modified in the altered gravitational environment and, in particular, hypergravity seems to affect
motor performance more considerably than microgravity. Even if experiments involving several subjects and more complex tasks
have to be carried out in order to confirm our findings, these results show that ergonomics could be strongly affected by
the modification of gravity, especially during the first phase of exposure to gravity alteration. 相似文献
94.
95.
Hélène Louvel Alexandre Gillet‐Markowska Gianni Liti Gilles Fischer 《Yeast (Chichester, England)》2014,31(3):91-101
Genome analysis of over 70 Saccharomyces strains revealed the existence of five groups of genetically diverged S. cerevisiae wild‐type isolates, which feature distinct genetic backgrounds and reflect the natural diversity existing among the species. The strains originated from different geographical and ecological niches (Malaysian, West African, North American, Wine/European and Sake) and represent clean, non‐mosaic lineages of S. cerevisiae, meaning that their genomes differ essentially by monomorphic and private SNPs. In this study, one representative strain for each of the five S. cerevisiae clean lineages was selected and mutated for several auxotroph genes by clean markerless deletions, so that all dominant markers remained available for further genetic manipulations. A set of 50 strains was assembled, including eight haploid and two diploid strains for each lineage. These strains carry different combinations of leu2?0, lys2?0, met15?0, ura3?0 and/or ura3?::KanMX‐barcoded deletions with marker configurations resembling that of the BY series, which will allow large‐scale crossing with existing deletion collections. This new set of genetically tractable strains provides a powerful tool kit to explore the impact of natural variation on complex biological processes. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
96.
97.
Elena Besco Elena Braccioli Silvia Vertuani Paola Ziosi Francesca Brazzo Renato Bruni Gianni Sacchetti Stefano Manfredini 《Food chemistry》2007,102(4):1352-1356
The number of methods to measure antioxidants in botanicals, foods, nutraceuticals and other dietary supplements are increased considerably in the last 10 years. However most techniques require long experimental times and high costs to determine antioxidant capacity of hydrophilic or lipophilic compound in a food mixture. By means of a photochemiluminescence method, we assessed the Integral Antioxidant Capacity (IAC) which represents the sum of the antioxidant capacity of hydrophilic and lipophilic antioxidants. In this study the IAC of extracts from Adansonia digitatata (i.e. red fiber, fruit pulp and leaves), was assessed in comparison to those deriving from other natural sources of antioxidants (i.e. orange, kiwi, apple and strawberry). When compared, IAC values for the examined product resulted as follows: Adansonia digitata red fibre ? Adansonia digitata fruit pulp ? Adansonia digitata fresh leaves ? Adansonia digitata seeds ? Adansonia digitata radix cuticle ? orange fresh pulp ? strawberry fresh fruit pulp > Adansonia digitata radix > bilberry fresh pulp ? kiwi fruit pulp. Results clearly indicate the interesting antioxidants properties of Adansonia digitata red fibre, in particular the IAC value of baobab red fibre was 66 time higher than that of orange pulp, with value of 1617.3 μmol/g and 24.3 μmol/g, respectively. 相似文献
98.
Jungwon Kim Peter J. Bentley Uwe Aickelin Julie Greensmith Gianni Tedesco Jamie Twycross 《Natural computing》2007,6(4):413-466
The use of artificial immune systems in intrusion detection is an appealing concept for two reasons. First, the human immune
system provides the human body with a high level of protection from invading pathogens, in a robust, self-organised and distributed
manner. Second, current techniques used in computer security are not able to cope with the dynamic and increasingly complex
nature of computer systems and their security. It is hoped that biologically inspired approaches in this area, including the
use of immune-based systems will be able to meet this challenge. Here we review the algorithms used, the development of the
systems and the outcome of their implementation. We provide an introduction and analysis of the key developments within this
field, in addition to making suggestions for future research. 相似文献
99.
Antonella Castagna Chiara Dall’Asta Emma Chiavaro Gianni Galaverna Annamaria Ranieri 《Food and Bioprocess Technology》2014,7(8):2241-2250
In the present study, the possibility of enhancing phenolic and flavonoid concentration in tomato (Solanum lycopersicum L.) fruits by post-harvest irradiation with UV-B light was assessed. Fruits of the commercial cv Money Maker (MM) and the mutant genotype high pigment-1 (hp-1), constitutively rich in these compounds, were harvested at mature green and turning stages and left to ripen within climatic chambers where they were daily treated with UV-B radiation (1 h, 6.08 kJ/m2 day). In control chambers, UV-B radiation was screened by benzophenone-treated polyethylene film. The treatment was generally effective in increasing phenolic, flavonoid and flavonol concentration in both peel and flesh of MM and hp-1 fruits, although in this latter the positive response to UV-B treatment was mainly evident in fruits harvested at mature green stage. Following UV-B treatment, antioxidant activity increased in the peel of both genotypes independently from the harvesting stage and in the flesh of hp-1 fruits harvested at mature green stage. Hydroxycinnamic acids of both genotypes reacted to UV-B treatment differently depending on harvesting stage and tissue localisation, generally showing an increase in the peel of fruits harvested at mature green stage. With few exceptions, UV-B irradiation also induced a higher accumulation of individual flavonoids both in the peel and in the flesh of MM and hp-1 fruits independently from harvesting stage. Based on these results, UV-B irradiation can be considered a promising technique to increase the nutraceutical potential of tomato fruits by non-molecular tools. 相似文献
100.
Gianni Panagiotou Evangelos Topakas Maria MoukouliPaul Christakopoulos Lisbeth Olsson 《Biomass & bioenergy》2011,35(8):3727-3732
Fusarium oxysporum F3 alone or in mixed culture with Saccharomyces cerevisiae F12 were used to ferment carbohydrates of wet exploded pre-treated wheat straw (PWS) directly to ethanol. Both microorganisms were first grown aerobically to produce cell mass and thereafter fermented PWS to ethanol under anaerobic conditions. During fermentation, soluble and insoluble carbohydrates were hydrolysed by the lignocellulolytic system of F. oxysporum. Mixed substrate fermentation using PWS and corn cobs (CC) in the ratio 1:2 was used to obtain an enzyme mixture with high cellulolytic and hemicellulolytic activities. Under these conditions, activities as high as 34300, 9100, 326, 24, 169, 27 and 254 U dm−3 of xylanase, endoglucanase, ??-glucosidase, arabinofuranosidase, avicelase, feruloyl esterase and acetyl esterase, respectively, were obtained. The replacement of the enzyme production phase of F. oxysporum by the addition of commercially available enzymes Celluclast® 1.5 L FG and Novozym® 188 in 3:1 ratio for the treatment of PWS, resulted in a 3-fold increase in the volumetric ethanol productivity without increasing the ethanol production significantly. By direct bioconversion of 110 kg m−3 dry matter of PWS, ethanol concentration (4.9 kg m−3) and yield (40 g kg−1 of PWS) were similarly obtained by F. oxysporum and the mixed culture, while productivity rates as high as 34 g m−3 h−1 and 108 g m−3 h−1 were obtained by F. oxysporum and the mixed culture, respectively. 相似文献